High Efficiency and Condensing Boilers in Northampton

Buderus Condensing Cascade Systems

GB162

Buderus Cascade Kits enable several boilers to be connected together to increase the overall output available, but, more importantly, the efficiency of the system is also significantly improved, as individual boilers can be turned on and off according to demand. The 800 Range, GB162, and GB312 boilers can all be installed in this way using pre-plumbed pipe work and installation jig.

Boilers Output Range Fuel Efficiency (Up to NCV) Burner Type Heat Exchanger
800 Cascades 86 - 240kW Gas 108% Premix burner Aluminium
GB 162 Cascades 130 - 800kw Gas 110% Premix burner Aluminium
GB 312 Cascades 180 - 560kW Gas 108% Premix burner Aluminium

The Condensing Revolution

Modern condensing boiler technology provides an economic solution for heating thanks to significantly lower fuel consumption. The reduced heating costs mean that the overall cost of installing a gas condensing boiler can often be recovered within a few years. A modern boiler system also adds value to the building by increasing its rentable value. In addition, installing a condensing boiler is a key measure in meeting modern building regulations regarding the installation of environmentally friendly technology.

Get up to 15% extra

The basic principle of condensing technology is that it utilises the energy which would otherwise be lost through the flue in a conventional heating system - i.e. the flue gases contain "latent heat". Flue gases are intensively cooled on the heat exchanger surfaces allowing the water vapour contained in the flue gases to condense in the boiler. This releases additional energy which is then used for heating. As a result of this Buderus boilers can achieve up to 110% nett efficiency (NCV - Nett Calorific Value).

In comparison with conventional systems, a Buderus condensing boiler can save up to 15% of heating costs with gas, and up to 10% with oil. Potential savings are significantly higher when comparisons are made with older boilers.

Low return temperature for greater efficiency

Condensation only starts to occur when the return temperature is below the dew point of the combustion gases. The basic benefit of a condensing boiler results from having the lowest possible flue temperature. Low flue gas temperatures are achieved with highly efficient heat exchanger surfaces, two stage or modulating burners, and also by appropriate operating conditions such as low return temperatures.

Economical throughout the year

With all Buderus controls it is possible for the return temperature to remain below the dew point, meaning the boiler is in condensing mode for more than 90% of the year.

GE PLUS Range

If a heating system has a maximum designed temperature of 75/60°C to account for the coldest weather conditions, the use of modulating controls allows the boiler to condense for more than 96% of the year. In new buildings with good thermal insulation even lower flow and return temperatures can be used, further increasing the potential savings created by condensing boiler technology through the whole year.

Investments that make sense

Compared with a conventional boiler, the investment costs of a modern condensing boiler are normally higher. However, for medium and higher output ranges, these investments soon pay for themselves. Condensing gas boilers save so much energy in daily use that the costs of the heating system are recovered in a few years.

For use anywhere

Whether you are planning projects for private, local authority housing, or commercial premises, the wide range of outputs offered by Buderus means you are certain to find a condensing heating system to suit your needs. From a simple apartment building to a large block of flats, from schools, sports centres or office buildings, right through to larger commercial premises and production facilities.

The 800 Range

The 800 Range is avaliable in outputs of 43 and 60kW and in a cascade system combined outputs of up to 120 kW.

the 800 Range

The G/GE Range

Features and benefits of the G/GE Range at a glance:

  • Variable outputs of 78 to 1,200 kW
  • Economical with standard utilisation rates of up to 96% (NCV)
  • Three pass construction for lower emissions
  • Compact boiler dimensions
  • Easy maintenance and cleaning
  • Buderus thermostream technology provides a simple system which is very reliable in low temperature operation and does not require a minimum return temperature to be maintained
  • Boilers shown with optional Buderus 4000 control units
G/GE Range